people = {
	"jackie chan": {
		"first_name": 'Jackie',
		"last_name": 'chan',
		"age": 70,
		"city": 'hongkong',
	},
	"zhangsan": {
		"first_name": "zhang",
		"last_name": "san",
		"age": 20,
		"city": '北京'
	},
	"lisi": {
	"first_name": "li",
	"last_name": "si",
	"age": 19,
	"city": '北京'
	}
}

for name, user in people.items():
	print(f"Username: {name}")
	# print(user)
	print(f"\t Full name: {user.get('first_name').title()} {user.get('last_name').title()}")
	print(f"\t Age: {user.get('age')}")
	print(f"\t Location: {user.get('city')}")